Home / 101,028.68-139,420.62-55,708.28

Finding the Fourth Proportional to 101,028.68, 139,420.62 and 55,708.28

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Solution

The fourth proportional to 101,028.68, 139,420.62 and 55,708.28 is: 76,878.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,028.68 : 139,420.62 = 55,708.28 : x
  2. Step 2: Convert to fraction form
    101,028.68/139,420.62 = 55,708.28/x
  3. Step 3: Cross multiply
    101,028.68x = 139,420.62 × 55,708.28
  4. Step 4: Simplify right side
    101,028.68x = 7,766,882,936.73
  5. Step 5: Solve for x
    x = 7,766,882,936.73/101,028.68
  6. Step 6: Final answer
    x = 76,878.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.